In this post, we are going to understand ** 4 ways to find area or perimeter of **a rectangle in Python. By using python program code example that includes finding the area of a rectangle **using class**, **function, the perimeter of a **rectangle.

### 1. Simple Program to find area of a rectangle in Python

In this Python program code, we will ask the user to enter the value of length and height of the rectangle.

We are using this mathematic formula To find the area of the rectangle **Rect_area = width*height**. Finally printing the calculated area of the rectangle.

#### Python Program Code

```
#Python Program to find area of a rectangle
length = float(input('Please Enter the length of a Rectangle: '))
height = float(input('Please Enter the height of a Rectangle: '))
Rect_area = length * height
print("Calculated Rectangle of area is: %.2f" %Rect_area)
```

Output

```
Please Enter the length of a Rectangle: 14
Please Enter the height of a Rectangle: 9
Calculated Rectangle of area is: 126.00
```

### 2. Find area of rectangle area and primeter

In this Python program code, we will ask the user to enter the value of length and height of the rectangle. To find the area and perimeter of a rectangle.

- The perimeter of a rectangle is the area around the edge.The mathematical formula to find the perimeter of a rectangle is =
**2*(Width + Height)** - The formula to calculate rectangle area is :
**= L*H** - We have defined a
**function Rectangle_area(L, H)**that takes two parameters,**Length, and**height of rectangle and calculates rectangle area and perimeter and print result output.

#### Python Program

```
#Python Program to find area of a rectangle using fuction
def Rectangle_area(L,H):
rect_area = L*H
rect_prim =2*(L + H)
print("calculated Rectangle area is:",rect_area)
print("Primeter of Rectangle is:",rect_prim)
length = float(input('Please Enter the length of a Rectangle: '))
height = float(input('Please Enter the width of a Rectangle: '))
Rectangle_area(length,height)
```

Output

```
Please Enter the length of a Rectangle: 12
Please Enter the width of a Rectangle: 13
calculated Rectangle area is: 156.0
Primeter of Rectangle is: 50.0
```

### 3. Program to find area of a rectangle using class

In this Python program, we have defined a class **Rect **with a **Rectangle_area() function** that calculates the rectangle area.

To use this **class **We have created the **Rect** class object **rectobj **and called the function **Rectangle_area()** that will calculate the area of a rectangle and return the result.

Finally using the print() function to print the result. Let us understand with the below example.

#### Python Program

```
#Python Program to find area of a rectangle using class
class Rect:
def __init__(self,l,w):
self.l = l
self.w = w
def Rectangle_area(self):
return self.l*self.w
length = float(input('Please Enter the length of a Rectangle: '))
height = float(input('Please Enter the height of a Rectangle: '))
rectobj = Rect(length,height )
print("calculated Rectangle area is:", rectobj.Rectangle_area())
```

Output

```
Please Enter the length of a Rectangle: 78
Please Enter the height of a Rectangle: 90
calculated Rectangle area is:7020.0
```

### 4. Find area of Rctangle using function

In this python program example, To find the area of a rectangle using the function we will define a function **Rectangle_area()** that has two parameters, lengths, and height of the rectangle and return the calculated area of a rectangle.

We have asked users to input the length and width of the rectangle and passed them to called function **Rectangle_area**() to find the result.

#### Python Program

```
def Rectangle_area(l,h):
return l*h
length = float(input('Please Enter the length of a Rectangle: '))
height = float(input('Please Enter the width of a Rectangle: '))
print("calculated Rectangle area is:",Rectangle_area(length,height ))
```

Output

```
Please Enter the length of a Rectangle: 12
Please Enter the height of a Rectangle: 13
calculated Rectangle area is: 156.0
```

## Summary

In this post, we have understood 4 ways to find the area or perimeter of a rectangle with a python program code example that includes **how to find the area of a **rectangle using class, How to find the area of a **rectangle using the function**, **how to find the perimeter of a rectangle**.